高一英语情态动词

单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,Grammar,情态动词,李中丰,非推测性情态动词,shall,will,must,mustnt,should,would,的用法,情态动词,could,should/ought to,may/might,neednt+have done,表示假设的用法,情态动词,must,can/could,may/might,should/ought to,表猜测的用法,情态动词的一些惯用法,shall,1.shall,用于第二、三人称陈述句中，表示说话人给对方的命令，警告，允诺或威胁。,1)You shall go with me.(,命令,),2)You shall have the book when I finish it.(,允诺,),3)He shall be punished.(,威胁,),2.shall,用于第一、三人称疑问句中，表示说话人征求对方的意见和向对方请示。,4)Shall we begin our class?,（,征求意见）,5)When shall Mike be able to leave hospital?(,请示,),3.,用语条约，规定，规章等文件中，表示一种义务，多用于第三人称中。,6)“The interest _be divided into five parts,according to the agreement made by both sides.”declared the judge.,A.may B.should C.must D.shall,must,mustnt,1.must,用于肯定句中表示“必须”,-Must I hand in my exercises now?,-Yes,you must.(No,you neednt.),我必须现在交练习吗？是的，必须。（不，你不必）,2.Must,用语肯定句中表示“偏偏”。,Naturally,after I told her what to do,my daughter must go and do the opposite.,自然地，在我交代女儿做什么之后，她偏偏要做相反的事情,3.mustnt,表示“禁止”,You mustnt play in the street.,你不能在街上玩耍。,used to,和,would,的区别,1.,在表示过去重复的习惯时，,used to,可用,would,代替。例如：,He would take a walk near the forest in the evening.,以前，他晚间常在森林附近散步。,He used to take a walk near the forest in the,(,而现在已经不在那里散步了,),2.used to,强调过去的行为同现在的对比，含有“过去怎样而现在却不这样了”的意思；而,would,则单纯表示过去的习惯性动作，常和,often,everyday,等连用。例如：,She isnt what she used to be.,她跟过去不一样了。（表示对比，不可用,would,）,We would sit in the yard every evening and listen to his story.,我们每天晚上坐在院子里，听他将故事。（表示过去的重复行为）,3.,表示过去的状态，只能用,used to,，,不可用,would,。,例如：,There used to be a park.,以前这里有一个公园。,should,表示“居然，竟然”。,I cant believe such a gentleman should be so rude to the old.,我不敢相信这样一个绅士居然对老人如此无礼。,will,表示“意愿”。,If you will attend the club,please sign your name here.,如果你愿意参加俱乐部，请在这里签名。,may,can/could,表示“按规定许可或征求别人的允许”。,I can park my car here.(,按规定停车,),-Could/May I park my car here?(could,表示语气更加委婉,),-No,you cant/mustnt.,Yes,you can/may,巩 固 练 习,1.-Wrtie to me when you get home.,-I _.,A.must B.should C.will D.can,2.A left-luggage office is a place where bags _ be left for a short time,especially at a railway station.,A.should B.can C.must D.will,3.-Excuse me,but I want to use your computer to type a report.,-You_ have my computer if you dont take care of it.,A.shant,B.might not C.neednt D.shouldnt,4.Why _ he think like that?I _ believe it.,A.should;wont B.should;cant,C.would;wont D.could;cant,5._ she use the computer in the office?,-Yes,please.,A.Will B.Would C.Can D.Shall,C,B,A,B,D,Must+do/be doing,可以对现在、现在进行的情况进行肯定的推测,1.Judging from his accident,he must be from the south.,听他的口音，他一定是南方人。,2.Tom bought a lot of apples.He must like eating apples.,汤姆买了很多苹果，他一定喜欢吃苹果。,3.It is eleven oclock at night and the lights are off.They must be sleeping now.,现在已经是深夜十一点且灯都关了，他们一定是在睡觉了。,Must+have done,表示对过去已经发生的行为进行推测，意为“想必,/,准是,/,一定作了某事”。,1.It must have rained last night,for the road was very muddy.,昨晚 一定是下雨了，因为地上很泥泞。,2.We must have learned 2,000 words by the end of last term.,到上学期为止我们一定学了有两千个单词 。,3.He must have gone to Beijing.,他一定已经去北京了。,NOTICE,must,表推测时只能用于肯定句中。,与,must,有关句子的反意疑问句。,1.Judging from his accident,he,must be,from the south,2.Tom bought a lot of apples.He,must like,eating apples,3.It is eleven oclock at night and the lights are off.They,must be sleeping,now,isnt,he?,didnt he?,arent they?,因,must,后是实意动词,like,因,must,后是系动词,be,must,后接的是,be sleeping,，,是对正在进行的情况推测,1.We must have learned 2,000 words,by the end of last term,hadnt we?,3.He must have gone to Beijing,didnt it?,hasnt he?,若句中含有过去完成时的时间状语，用过去完成时完成反意疑问句,若句中含有过去的时间状语，用一般过去时完成反意疑问句,若句中不含任何时间状语，用现在完成时完成反意疑问句,2.It must have rained,last night,for the road was very muddy，,can,后跟动词原形，表示小、对现在情况的否定和疑问推测,1.,Mr,Li has gone to Beijing,the man at the gate cant be him,。,李老师去北京了，门口的那个人不可能是他。,2.The watch is not yours.Who elses can it be?,这块表不是你的，它可能是谁的呢？,can/could+have done,表示对过去的行为的怀疑和不肯定，通常用在否定句和疑问句中。,1.Can they have won the basketball match?,他们可能赢了篮球赛吗？,2.It couldnt have been Mr.Green.He has gone to New York.,那不可能是格林先生的，他已经去北京了。,may/might,后跟动词原形，表示对现在情况的推测。,may/might+have done,表示对过去已发生行为的推测，意为“也许,/,或许,/,已经,”,。一般只用语肯定句和否定句中，不用与疑问句。,might,比,may,更委婉、含蓄和不肯定。,1.He may/might be English.,他可能是英国人。,2.Its too late.I think he may have gone to bed.,太晚了，我想他可能已经睡觉了。,3.He may/might not have finished the work.,他可能没有完成工作。,should/ought to,表示推测，意为“理应，应该”。,They left yesterday.They should be home by now.,他们昨天就离开了，现在理应到家了。,巩 固 练 习,1.-What _ it be?,-It _ be a mail box,for it is moving.It _ be a car.,A.can;cant;must B.can;can;must,C.can;mustnt;must D.must;mustnt can,2.-Isnt that Anns husband over there?,-No.it _ be him-Im sure he doesnt wear glasses.,A.cant B.must not C.wont D,may not,3.-When can I come for the photos?I need them tomorrow afternoon.,-They _ be ready by 12:00.,A.can B.should C.might D.need,4.-are you coming to Jeffs party?,-Im not sure.I _ go to the concert instead.,A.must B.would C.should D.might,A,A,B,D,5.-You may laugh,but Ive been thinking of becoming a vegetarian.,-Oh,you _ be out of your mind.You will be hungry all the time.,A.will B.may C.must D.should,6.-I wonder why they are late?,-Th